Hey Reece,
Great work with the site! I have a few minor austhetic and user friendly suggestions... Here goes:
1. Why is an auctions current bid called the 'Max. Bid'? I don't get it - a little confusing at first, or have I missed something? It doesn't make sence to me...
2. Listing Title - Is there anyway to limit the auction title? I would rather look through a list of auctions in the same way you do on Sedo - just the name 'no bullshit'

I think something should be in place to stop people posting an auction with the title 'The greatest domain in the world, aka the one and only XXXX--->>>>LLLL.com<<<<---XXXX etc

It would make browsing lists a whole lot easier. Also making the 'Item Title' column wider would help.
3. Listing Title (in auction) - I think this needs to be bigger and bolder. I clicked on one auction and had trouble finding what domain I had clicked on! I think the auction title (i.e.: the domain) should be more prominent on the actual listing page... its a bit tucked away at the top.
4. Registrar and Expiration date - should be compulsary? Just a thought... maybe not such a great one but I would prefer to see this on every auction.
5. 'Next Step', 'Previous Step' buttons - When creating an auction these are reversed... The 'next step' button should be on the right because thats its natural place because you are moving forward. This is a user friendly type suggestion - a little like the back/forward buttons in IE - imagine if they were the wrong way round!
6. Alt tags on images -i.e.: in an auction under 'seller information' there is a 'me' icon and a 'shop' icon - these should have alt tags - one thing I do before clicking on a button that I dont know what it does is hover over to get an idea of what it does do from the alt tag...'
A few suggestions which I hope are constructive!
Love the site and hope everything works out! I'm sure it will...
And to all those that don't think the UK is the centre of the world! Think again!

It was nice to register on a site that has UK at the top of the list!! A first! lol :p
Rich